Updating a path alias for a post creates a 2nd alias instead of changing the primary one

Steps-to-Repro
1. Go to a page that has a pre-defined path alias or create a page and name the path alias /test
2. Change the path alias to test2

Results
3. If you look at the path returned in the browser, it is the same as before.

Steps-to-Repro continued
4. Click Edit.
5. Scroll down and see that the path alias has not changed
6. Call /test2 from your browser.

Results2
7. You will see that the page returned is the same..